Senior Software Engineer - Compilers (LLVM)

Job Title

Senior Software Engineer - Compilers (LLVM)

Role Summary

Work on LLVM compiler technology to maximize performance for Arm architectures (e.g. SVE, SME). Collaborate with the LLVM open-source community and internal product teams to upstream changes, influence optimisation strategies, and improve application and benchmark performance on Arm hardware.

Experience Level

Senior level. Specific years of experience not stated.

Responsibilities

Primary responsibilities include technical leadership within LLVM-related compiler development and cross-team collaboration.

• Provide technical expertise and influence across LLVM compiler development for Arm and upstream, shaping optimisation strategies and technical decisions.
• Mentor engineers inside the LLVM team and in the external community.
• Represent Arm in the LLVM ecosystem, lead upstream contributions, and align with partners and community direction.
• Partner with internal Arm teams to define priorities and deliver integrated solutions that support Arm’s roadmap.
• Champion improvements in development workflows, profiling methodologies, and performance benchmarking processes.

Requirements

Must-have technical skills, community experience, and collaboration abilities.

• Excellent programming skills in C/C++.
• Proven participation in the LLVM open-source community (code commits and reviews).
• Hands-on experience analysing performance bottlenecks and profiling workloads.
• Experience with low-level software or hardware development that requires interpreting computer-architecture specifications (compilers, debuggers, models, etc.).
• Strong software development practices: coding, testing, debugging, and code review.
• Effective communication skills to influence internal and external partners.
• Ability to collaborate across teams and sites; proactive problem-solving mindset.

Nice-to-have:

• Experience with Profile Guided Optimization (PGO).
• Understanding of computer architecture.
• Familiarity with Agile methodologies (Scrum or Kanban).
• Experience with Linux performance analysis tools and system-level performance tuning.
• Familiarity with build systems and CI.

Education Requirements

Not specified.

About the Company

Company: Arm

Headquarters: Cambridge, United Kingdom

ARM is a global leader in semiconductor and software design, driving innovation in computing technology. The company specializes in designing processors and systems that provide the essential building blocks for electronic devices. ARM's architecture is widely used in smartphones, servers, and IoT devices, and its collaborative culture fosters bold thinking, diversity, and high-impact benefits for its talented workforce.